It is advised that players talk to Vaelastraz to pick up this quest before the event is started. There is a very short period of time after someone starts the event while Vael is still friendly if it is still necessary to pick up the quest.

After accepting the quest, Nefarius will yell: Looking for this: [Red Scepter Shard]? Come and get it...

Some time later may yell the following:

I wonder, heroes, what will you do when I manage to destroy this shard? Will the world be beyond Salvation?Lord Victor Nefarius's laughter echoes through the halls of Blackwing.

What's this? A chip in the shard? Finally, a weakness exposed... It won't be long now.